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Finding the Fourth Proportional to 119,632.53, 165,081.15 and 65,915.76

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Solution

The fourth proportional to 119,632.53, 165,081.15 and 65,915.76 is: 90,957.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,632.53 : 165,081.15 = 65,915.76 : x
  2. Step 2: Convert to fraction form
    119,632.53/165,081.15 = 65,915.76/x
  3. Step 3: Cross multiply
    119,632.53x = 165,081.15 × 65,915.76
  4. Step 4: Simplify right side
    119,632.53x = 10,881,449,463.92
  5. Step 5: Solve for x
    x = 10,881,449,463.92/119,632.53
  6. Step 6: Final answer
    x = 90,957.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.